Window screen



'F' WALL y l WINDOW SCREEN Original Filed Nov. 7. 3.921 1 Patented ct. 16, 1923.

JOSEPH E. WALL, or wEsTF'IELD, NEW JERSEY.

WINDOW SCREEN.

Application led November 7, 1921. Serial No.513,424. Renewed March 8, 1923.

To all whom t may concern.'

Be it known that I, JOSEPH F WALL,` a citizen of the United States, residing at Westfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Window Screens; and I do declare the following to be a full, clear, and exact` description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in window screens of the type employing` a single unbroken sheet of woven wireconnected at its edges Witha frame which is adjustable both vertically .and horizontally,.the strands of the Wire being'. positioned diagonally of the frame sides and being free to move on each other as the frame is extended in either direction. I am awarethat screens of this type have been heretofore devised, `employing four right `angular frame sections whose arms are telescopically engaged with each other, but it is the principal aim of the presenty invention to provide an improved structure which may be more easily and less expensively manufactured, novel provision being made vwhereby instead of necessarily telescoping the sections of the frame, they may merely7 overlap manner.

A still further obj ect of the invention is to provide improved means for insuring the proper movement of the several side bar sections, in parallelism with eachother.

With the foregoing in view, the `invention resides in the novel subject matter hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawings.

Figure 1 is a front elevation of a window screen constructed in accordance with my invention. f

Figure 2 is an edge view. i

Figures 3, 4 and 5, are detail horizontal sectional views as indicated by the lines 3-3, 1*4 and 5 5 of Fig. l.

Figure 6 is a perspective view of the shee of woven wire, showing the manner of bending its edges for sliding engagement with the frame.

Figure 7 is a fragmentary edge View parteach other in a sliding ly in section showing a modified form of construction.

Figure 8 is a detail horizontal sectional view as indicated by line 8.-8 of Fig.` 7.

In the drawings above briefly described, the numeral l designates a rectangular sheet of woven screen wire, whoseedges are slit transversely at intermediate points, the half `of each edge at` one sideof the slit being bent in one direction, while the half atvthe other side of said slit is bent in the opposite direction, thus forming apair of oppositely extending flanges 2 on each edge ofthe sheet, which flanges are preferably of L- shape in transverse section. As shown clearly invFigs. l and 6, the several strands of the woven. wire are positioned diagonally of the y `sheet and it is to be clearly lunderstood that these strands are absolutely free of connection with each other so that they mayrelatively move when the retaining frame 1s eX- tended either vertically or horizontally.

The numeral 3 designates in a general way thefourk side bars of a frame for the sheet l, said bars being rigidly secured together at their corners by appropriate metal brackets 4. c Each of the ybars Sis preferably al-` though not necessarily constructed of ywood and isformed of two overlapping sections 5 which `contact slidably with opposite sides of the sheet l, said sections `being provided in their inner faces withy longitudinal channels 6 whichv slidablyreceive the hooked ends of the strands forming the iianges 2.

Each side bar section 5 is by preference formed of two strips yof wood secured together by brads orthe like 7 as shown clearly in the transverse sectional view.

ile any preferred means may be employed for slidably connecting the overlapping sections 5 yof each side bar 3, I have shown angular metal slides 8 for this purpose, said slides being secured to one bar section and bent around the other as shown.

By using the construction shown, the the frame and the sheet of wire may be adjusted to adapt the screen to windows of diierent sizes and shapes. By pulling upwardly on the top side bar and downwardly on the bottom bar, the screen is vertically extended, during which operation, the sections of said top and bottom bars slide inwardly upon each other while the sections of the vertical bars slide outwardly upon each other as will be readily understood by comparing the full and dotted line positions of Fig. l. T assist in operating the trame in this `or a similar manner and to insure that the opposed side bars thereof Shall maintain the proper parallel relation with each other, I preferably associate some form ot spring means with said side bars. In the form of construction shown in Figs. l to 5, an endless hoop 9 is placed under tension within the 'trame of the screen, said hoop being of approximately circular form before it is inserted into the trame, although "l it will assume the flat-sided condition illusstress thereon.

quired result in a simple and inexpensive manner;

trated in Fig. 1 when applied to said trame. It will be seen that the hoop bears against the inner portions of all four side bars of the frame and thus exerts equal outward This will obtain the re- The sheet of vscreen wire l prevents movement of the hoop in one direction from the frame and any suitablemeans such as the pins l0 may be employed to hold it against movement in the other direction.

In Figs. 7 and 8, I. have shown a modiied form of spring means which may be associated with the sections 5 of 4each side i bar of the trame. In these views, the inner adjacent sides of the sections are longitudinally grooved as at Il and a coil Spring l2 is positioned in saidgrooves, being connected at one end to one section and at its' other end to the other section, The action of these spring is the same as the spring hoop 9. i

From the foregoing, taken in connection with the accompanying drawings, it will be seen that I have provided a very simple and inexpensive, yet a highly elicien-t andv desirable window screen which, while employing a single unbroken sheet of. wire and that within the scope or the invention as claimed numerous minor changes may be made.

I claim:

l. A window screen comprising a sheet l of woven wire havingits edges bent to provide each edge with oppositely extending lateral flanges, and a frame for said sheet` hait is similarly bent in theV other direction,vk Jforming oppositely extendingY flanges, and

a Jtrame for said'sheethavingfsidejbars formed of overlapped slidable4 sections at opposite sides of the sheet'and havinglongitudinal channels ysldably receiving said flanges; the strands of said woven wire being diagonal withy respect to the frame and being free to move on' each other. Y

3. Awindow screen comprising'a sheet ot' woven wire whosey Vstrands extend vdiagonally with respectf'toits edges and are tree to move on each other, a frame with which the edges of the sheet are slidably connected, the side bars of saidni'rame being formed of relatively slidable sections, and spring means acting on said sectionsV to insure uniform sliding of opposed side bars.

4. A window screen comprising a sheetv of woven wire whose strands extend diagonally with respect/tol its edges and are tree to move'on each other, la frame with which the edges of the sheet are' slidably connected, the side bars of said iframel being formed of relatively slidable sections, and a spring metal hoop bearing under tension against all sides of said frame for the purpose set forth.

In testimony whereof I have .hereuntov set my hand. c

Y JOSEPH F."WALL.' 

